Cooler box



FIG. 1 is a left side elevation view of a cooler box showing my newdesign;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top front perspective view taken at a reduced scale.

The ornamental design for a cooler box, substantially as shown anddescribed.